Digital content creator/reproducer and advertisement distribution system

Abstract

A technique is provided of stimulating the spread of the electronic watermarking system, activating advertisement businesses over the Internet, and thus increasing advertisement incomes to the advertisement agency of an advertisement site. The system comprises a communication line, a digital content creator 702 and an advertisement site 704 interconnected by said communication line, and a digital content reproducer 706 . The digital content creator 702 inserts electronic watermarked data representing the URL of the advertisement site into a digital content. The digital content reproducer 706 extracts electronic watermarked data, accesses the advertisement site based on the value, and reads out the advertisement information. The digital content reproducer 706 manifests the digital content and the advertisement information.

What is claimed is:  
     
         1 . A digital content creator for inserting electronic watermarked data into a digital content, said electronic watermarked data in which a URL (Uniform Resource Locator) of a Web site providing advertisement information is described.  
     
     
         2 . The digital content creator defined in  claim 1 , wherein said digital content comprises an advertisement image.  
     
     
         3 . A digital content creator comprising: 
 a discrete cosine converter for subjecting a digital content to discrete cosine conversion and thus creating a DCT coefficient; and    a data inserter for inserting electronic watermarked data into said DCT coefficient;    said electronic watermarked data in which a URL (Uniform Resource Locator) of a Web site providing advertisement information is described.    
     
     
         4 . The digital content creator defined in  claim 2 , wherein said digital content comprises an advertisement image.  
     
     
         5 . A digital content creator for inserting electronic watermarked data into a digital content, said electronic watermarked data in which a URL (Uniform Resource Locator) of a Web site providing advertisement information is described, said digital content creator comprising: 
 an inserter for inserting said electronic watermarked data into said digital content.    
     
     
         6 . The digital content reproducer defined in  claim 5 , wherein said digital content comprises an advertisement image.  
     
     
         7 . A digital content creator comprising: 
 a discrete cosine converter for subjecting a digital content to discrete cosine conversion and thus creating a DCT coefficient; and    a data inserter for inserting electronic watermarked data into said DCT coefficient;    said electronic watermarked data in which a URL (Uniform Resource Locator) of a Web site providing advertisement information is described; and    an inserter for inserting said electronic watermarked data into said digital content.    
     
     
         8 . The digital content reproducer defined in  claim 7 , wherein said digital content comprises an advertisement image.  
     
     
         9 . A digital content reproducer that detects electronic watermarked data inserted in a digital content and then manifests said digital content on a display, wherein a Web site supplying advertisement information is accessed based on a value of said electronic watermarked data to receive said advertisement information, said advertisement information being manifested on said display.  
     
     
         10 . The digital content reproducer defined in  claim 9 , wherein said digital content comprises an advertisement image.  
     
     
         11 . A digital content reproducer comprising: 
 a decoder for extracting a DCT coefficient from a digital content into which electronic watermarked data is inserted;    a detector for detecting said electronic watermarked data inserted into said DCT coefficient; and    a display for subjecting said DCT coefficient to inverse discrete conversion and reproducing said digital content;    wherein said display receives said advertisement information by accessing a Web site supplying advertisement information based on said electronic watermarked data and manifests said advertisement information on said display.    
     
     
         12 . The digital content reproducer defined in  claim 11 , wherein said digital content comprises an advertisement image.  
     
     
         13 . An advertisement information distribution system comprising: 
 a communication line;    a digital content reproducer and an advertisement site which are interconnected to said communication line; and    a digital content creator;    said digital content creator having means for inserting electronic watermarked data into a digital content;    said digital content reproducer having means for detecting electronic watermarked data from a digital content into which electronic watermarked data is inserted; means for reading out advertisement information from an advertisement site specified by a value of electronic watermarked data through said communication line; means for reproducing digital contents; and means for displaying a reproduced digital content and said advertisement information;    said advertisement site having means for distributing goods or services.    
     
     
         14 . The advertisement information distribution system defined in  claim 13 , wherein said communication line comprises the Internet.  
     
     
         15 . The advertisement information distribution system defined in  claim 14 , wherein a URL of a Web site supplying advertisement information is described to said electronic watermarked data.  
     
     
         16 . The advertisement information distribution system defined in  claim 13 , wherein said digital content comprises an advertisement image.  
     
     
         17 . A digital content creation method wherein electronic watermarked data is inserted into a digital content, said electronic watermarked data in which a URL of a Web site supplying advertisement information is described.  
     
     
         18 . The digital content creation method defined in  claim 17 , wherein said digital content comprises an advertisement image.  
     
     
         19 . A digital content creation method comprising the steps of: 
 creating a DCT coefficient by subjecting a digital content to discrete cosine conversion; and    inserting electronic watermarked data into said DCT coefficient;    said electronic watermarked data in which a URL of a Web site supplying advertisement information is described.    
     
     
         20 . The digital content creation method defined in  claim 19 , wherein said digital content comprises an advertisement image.  
     
     
         21 . A digital content reproduction method, wherein electronic watermarked data inserted into a digital content is detected and said digital content is manifested on a display, comprising the steps of: 
 receiving said advertisement information by accessing a Web site supplying advertisement information based on a value of said electronic watermarked data; and    manifesting said advertisement information on said display.    
     
     
         22 . The digital content reproduction method defined in  claim 21 , wherein said digital content comprises an advertisement image.  
     
     
         23 . A digital content reproduction method comprising the steps of: 
 extracting a DCT coefficient from a digital content into which electronic watermarked data is inserted;    detecting said electronic watermarked data inserted into said DCT coefficient;    subjecting said DCT coefficient to inverse discrete cosine conversion and then reproducing said digital content;    displaying said reproduced digital content;    receiving said advertisement information by accessing a Web site supplying advertisement information based on a value of said electronic watermarked data; and    displaying said advertisement information.    
     
     
         24 . The digital content reproduction method defined in  claim 23 , wherein said digital content comprises an advertisement image.  
     
     
         25 . An advertisement information distribution method comprising the steps of: 
 inserting electronic watermarked data into a digital content;    outputting the digital content into which said electronic watermarked data is inserted;    extracting electronic watermarked data from the digital content into which said electronic watermarked data is inserted;    reading out the advertisement information from a Web site specified by a value of said electronic watermarked data; and    displaying said digital content and said advertisement information.    
     
     
         26 . The advertisement information distribution method defined in  claim 25 , wherein a URL of said Web site supplying advertisement information is described to said electronic watermarked data.  
     
     
         27 . The advertisement information distribution method defined in  claim 25 , wherein said digital content comprises an advertisement image.  
     
     
         28 . A computer readable recording medium on which a program is recorded, said program making a computer execute the step of creating a DCT coefficient by discrete-cosine converting a digital content and the step of inserting electronic watermarked data into said DCT coefficient; 
 an URL of a Web site supplying advertisement information being described to said electronic watermarked data.    
     
     
         29 . The recording medium defined in  claim 28 , wherein said digital content comprises an advertisement image.  
     
     
         30 . A computer readable recording medium on which a program is recorded, said program making a computer execute the step of extracting a DCT coefficient from a digital content into which electronic watermarked data is inserted, the step of detecting said electronic watermarked data inserted into said DCT coefficient, the step of inverse-discrete-cosine converting said DCT coefficient to reproduce a digital content, and the step of displaying the reproduced digital content, said computer storing a program for executing the steps of receiving said advertisement information by accessing the web site based on a value of said electronic watermarked data and displaying said advertisement information.  
     
     
         31 . The recording medium defined in claim  30 , wherein said digital content comprises an advertisement image.